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Heart Rate Variability and depression

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https://www.readbyqxmd.com/read/28528244/heart-rate-variability-of-chronic-posttraumatic-stress-disorder-in-the-korean-veterans
#1
Joo Eon Park, Ji Yeon Lee, Suk-Hoon Kang, Jin Hee Choi, Tae Yong Kim, Hyung Seok So, In-Young Yoon
Patients with post-traumatic stress disorder (PTSD) have lower heart rate variability (HRV) than the general population, but findings in this area have been inconsistent. This study was conducted to investigate the characteristics of HRV in patients with PTSD and to evaluate associations between PTSD symptoms and HRV indices. Sixty-eight patients with PTSD and 73 controls without PTSD were evaluated. HRV was measured in all subjects after they completed self-reported questionnaires. Patients with PTSD had significantly more depressed moods, anxiety, and poorer sleep quality than individuals in the non-PTSD group...
May 9, 2017: Psychiatry Research
https://www.readbyqxmd.com/read/28527537/effects-of-a-single-intravenous-bolus-of-fentanyl-on-the-minimum-anesthetic-concentration-of-isoflurane-in-chickens-gallus-gallus-domesticus
#2
Rozana W da Rocha, André Escobar, Bruno H Pypendop, Darcio Zangirolami Filho, Roberto Thiesen, Fábio N Gava
OBJECTIVE: To assess the temporal effects of a single fentanyl intravenous (IV) bolus on the minimum anesthetic concentration (MAC) of isoflurane in chickens and to evaluate the effects of this combination on heart rate (HR) and rhythm, systemic arterial pressures (sAP) and ventilation. STUDY DESIGN: Prospective experimental trial. ANIMALS: Seventeen adult chickens weighing 1.8±0.2 kg. METHODS: Individual isoflurane MAC for 17 chickens was previously determined using the bracketing method...
January 11, 2017: Veterinary Anaesthesia and Analgesia
https://www.readbyqxmd.com/read/28514792/autonomic-dysregulation-in-burnout-and-depression-evidence-for-the-central-role-of-exhaustion
#3
Magdalena K Kanthak, Tobias Stalder, LaBarron K Hill, Julian F Thayer, Marlene Penz, Clemens Kirschbaum
Objectives Given the important role of the autonomic nervous system (ANS) in stress regulation, astonishingly little is known about ANS functioning in burnout, a condition arising after prolonged exposure to work-related stress. The current study sought to investigate ANS modulation, as indexed by vagally-mediated heart rate variability (HRV), in relation to burnout symptomatology to (i) distinguish associations between the three dimensions of burnout [emotional exhaustion (EE), cynicism, reduced personal accomplishment] and (ii) investigate overlap in associations with depressive symptomatology...
May 18, 2017: Scandinavian Journal of Work, Environment & Health
https://www.readbyqxmd.com/read/28505021/use-of-a-short-acting-%C3%AE-1-blocker-during-endotoxemia-may-reduce-cerebral-tissue-oxygenation-if-hemodynamics-are-depressed-by-a-decrease-in-heart-rate
#4
Tadayoshi Kurita, Shingo Kawashima, Koji Morita, Yoshiki Nakajima
BACKGROUND: A decrease in heart rate (HR) using a short-acting β blocker has potential benefits in sepsis; however, depression of hemodynamics and reduction of cerebral oxygenation may also occur in endotoxemia. METHODS: Seventeen swine were allocated to landiolol or control groups. In the landiolol group, the dose was sequentially changed from 0 to 40 to 200 μg kg min, and stopped. Hemodynamics, blood variables, and the cerebral tissue oxygenation index (TOI) were recorded by near infrared spectroscopy at each dose...
June 2017: Shock
https://www.readbyqxmd.com/read/28494812/whole-blood-gene-expression-in-adolescent-chronic-fatigue-syndrome-an-exploratory-cross-sectional-study-suggesting-altered-b-cell-differentiation-and-survival
#5
Chinh Bkrong Nguyen, Lene Alsøe, Jessica M Lindvall, Dag Sulheim, Even Fagermoen, Anette Winger, Mari Kaarbø, Hilde Nilsen, Vegard Bruun Wyller
BACKGROUND: Chronic fatigue syndrome (CFS) is a prevalent and disabling condition affecting adolescents. The pathophysiology is poorly understood, but immune alterations might be an important component. This study compared whole blood gene expression in adolescent CFS patients and healthy controls, and explored associations between gene expression and neuroendocrine markers, immune markers and clinical markers within the CFS group. METHODS: CFS patients (12-18 years old) were recruited nation-wide to a single referral center as part of the NorCAPITAL project...
May 11, 2017: Journal of Translational Medicine
https://www.readbyqxmd.com/read/28480859/the-effects-of-non-functional-overreaching-and-overtraining-on-autonomic-nervous-system-function-in-highly-trained-athletes
#6
T Kajaia, L Maskhulia, K Chelidze, V Akhalkatsi, Z Kakhabrishvili
Aim of the study was to compare the ANS functioning, as measured by heart rate variability (HRV), in athletes with non-functional overreaching (NFO) and overtraining syndrome (OTS) and in athletes without NFO/OTS. In 43 athletes with NFO/OTS, 40 athletes without NFO/OTS, as well as in 35 sedentary subjects the ANS function was evaluated with the Autonomic Balance Test, based on the HRV analysis of resting heart rate recordings. Results of the study show lower HRV and lower vagal influence along with increased sympathetic cardiovascular control in athletes with non-functional overreaching and particularly in athletes with overtraining, than in highly trained athletes without NFO/OTS...
March 2017: Georgian Medical News
https://www.readbyqxmd.com/read/28480684/effects-of-cognitive-behavior-therapy-on-heart-rate-variability-in-young-females-with-constipation-predominant-irritable-bowel-syndrome-a-parallel-group-trial
#7
Aelee Jang, Sun-Kyung Hwang, Nikhil S Padhye, Janet C Meininger
Background/Aims: The relation between heart rate variability (HRV) as non-invasive biomarkers of autonomic function and cognitive behavior therapy (CBT) as non-pharmacological treatments has rarely been examined in patients with constipation-predominant irritable bowel syndrome (IBS-C). The purpose of this study was to evaluate the efficacy of an 8-week CBT intervention on HRV and IBS symptoms, and the correlation of changes in HRV with changes in IBS symptoms among young female nursing students with IBS-C...
May 8, 2017: Journal of Neurogastroenterology and Motility
https://www.readbyqxmd.com/read/28474988/premedication-with-fentanyl-midazolam-improves-sevoflurane-anesthesia-for-surgical-intervention-in-laboratory-mice
#8
Miriam Lipiski, Margarete Arras, Paulin Jirkof, Nikola Cesarovic
Balanced anesthesia allows for a reduced dosage of each component, while inducing general anesthesia of sufficient depth with potentially fewer side effects. Here, we compare two anesthetic protocols combining sevoflurane anesthesia with pre-medication (ketamine [K] or fentanyl-midazolam [FM]) to a sevoflurane monoanesthesia (S) concerning their ability to provide reliable anesthesia suitable for moderate surgery in laboratory mice. Twenty-one female C57BL/6J mice assigned randomly to one of three protocols underwent a 50-min anesthesia and a sham embryo transfer...
January 1, 2017: Experimental Biology and Medicine
https://www.readbyqxmd.com/read/28461477/opposing-roles-of-primate-areas-25-and-32-and-their-putative-rodent-homologs-in-the-regulation-of-negative-emotion
#9
Chloe U Wallis, Rudolf N Cardinal, Laith Alexander, Angela C Roberts, Hannah F Clarke
Disorders of dysregulated negative emotion such as depression and anxiety also feature increased cardiovascular mortality and decreased heart-rate variability (HRV). These disorders are correlated with dysfunction within areas 25 and 32 of the ventromedial prefrontal cortex (vmPFC), but a causal relationship between dysregulation of these areas and such symptoms has not been demonstrated. Furthermore, cross-species translation is limited by inconsistent findings between rodent fear extinction and human neuroimaging studies of negative emotion...
May 1, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28454598/the-accuracy-night-to-night-variability-and-stability-of-frontopolar-sleep-electroencephalography-biomarkers
#10
Daniel J Levendowski, Luigi Ferini-Strambi, Charlene Gamaldo, Mindy Cetel, Robert Rosenberg, Philip R Westbrook
STUDY OBJECTIVES: To assess the validity of sleep architecture and sleep continuity biomarkers obtained from a portable, multichannel forehead electroencephalography (EEG) recorder. METHODS: Forty-seven subjects simultaneously underwent polysomnography (PSG) while wearing a multichannel frontopolar EEG recording device (Sleep Profiler). The PSG recordings independently staged by 5 registered polysomnographic technologists were compared for agreement with the autoscored sleep EEG before and after expert review...
April 25, 2017: Journal of Clinical Sleep Medicine: JCSM: Official Publication of the American Academy of Sleep Medicine
https://www.readbyqxmd.com/read/28440737/heart-rate-variability-depression-in-porcine-peritonitis-induced-sepsis-without-organ-failure
#11
Dagmar Jarkovska, Lenka Valesova, Jiri Chvojka, Jan Benes, Vojtech Danihel, Jitka Sviglerova, Lukas Nalos, Martin Matejovic, Milan Stengl
Depression of heart-rate variability (HRV) in conditions of systemic inflammation has been shown in both patients and experimental animal models and HRV has been suggested as an early indicator of sepsis. The sensitivity of HRV-derived parameters to the severity of sepsis, however, remains unclear. In this study we modified the clinically relevant porcine model of peritonitis-induced sepsis in order to avoid the development of organ failure and to test the sensitivity of HRV to such non-severe conditions. In 11 anesthetized, mechanically ventilated and instrumented domestic pigs of both sexes, sepsis was induced by fecal peritonitis...
May 2017: Experimental Biology and Medicine
https://www.readbyqxmd.com/read/28420362/clinical-hemispheric-and-autonomic-changes-associated-with-use-of-closed-loop-allostatic-neurotechnology-by-a-case-series-of-individuals-with-self-reported-symptoms-of-post-traumatic-stress
#12
Charles H Tegeler, Jared F Cook, Catherine L Tegeler, Joshua R Hirsch, Hossam A Shaltout, Sean L Simpson, Brian C Fidali, Lee Gerdes, Sung W Lee
BACKGROUND: The objective of this pilot study was to explore the use of a closed-loop, allostatic, acoustic stimulation neurotechnology for individuals with self-reported symptoms of post-traumatic stress, as a potential means to impact symptomatology, temporal lobe high frequency asymmetry, heart rate variability (HRV), and baroreflex sensitivity (BRS). METHODS: From a cohort of individuals participating in a naturalistic study to evaluate use of allostatic neurotechnology for diverse clinical conditions, a subset was identified who reported high scores on the Posttraumatic Stress Disorder Checklist (PCL)...
April 19, 2017: BMC Psychiatry
https://www.readbyqxmd.com/read/28412613/intensified-emotion-perception-in-depression-differences-in-physiological-arousal-and-subjective-perceptions
#13
Sofia Wenzler, Marleen Hagen, Mika P Tarvainen, Marietheres Hilke, Naddy Ghirmai, Ann-Caitlin Huthmacher, Marco Trettin, Rolf van Dick, Andreas Reif, Viola Oertel-Knöchel
People suffering from depression perceive themselves and their surroundings as more negative than healthy ones. An explanation might be that depressed individuals experience negative information as more stressful than non-depressed subjects and, consequently, respond in an amplified manner on a subjective and physiological level. To test this proposition, we presented 41 patients with recurrent depressive episodes and 42 controls with stimuli from the International Affective Picture System split into three valence categories while different parameters of physiological arousal (e...
April 2, 2017: Psychiatry Research
https://www.readbyqxmd.com/read/28411417/heart-rate-variability-and-cordance-in-rapid-eye-movement-sleep-as-biomarkers-of-depression-and-treatment-response
#14
Marcel A Pawlowski, Mary Gazea, Bastian Wollweber, Martin Dresler, Florian Holsboer, Martin E Keck, Axel Steiger, Marek Adamczyk, Thorsten Mikoteit
OBJECTIVES: The relevance of rapid eye movement (REM) sleep in affective disorders originates from its well-known abnormalities in depressed patients, who display disinhibition of REM sleep reflected by increased frequency of rapid eye movements (REM density). In this study we examined whether heart rate variability (HRV) and prefrontal theta cordance, both derived from REM sleep, could represent biomarkers of antidepressant treatment response. METHODS: In an open-label, case-control design, thirty-three in-patients (21 females) with a depressive episode were treated with various antidepressants for four weeks...
April 2, 2017: Journal of Psychiatric Research
https://www.readbyqxmd.com/read/28377186/reliability-construct-validity-and-determinants-of-6-minute-walk-test-performance-in-patients-with-chronic-heart-failure
#15
Nicole H M K Uszko-Lencer, Rafael Mesquita, Eefje Janssen, Christ Werter, Hans-Peter Brunner-La Rocca, Fabio Pitta, Emiel F M Wouters, Martijn A Spruit
BACKGROUND: In-depth analyses of the measurement properties of the 6-minute walk test (6MWT) in patients with chronic heart failure (CHF) are lacking. We investigated the reliability, construct validity, and determinants of the distance covered in the 6MWT (6MWD) in CHF patients. METHODS: 337 patients were studied (median age 65years, 70% male, ejection fraction 35%). Participants performed two 6MWTs on subsequent days. Demographics, anthropometrics, clinical data, ejection fraction, maximal exercise capacity, body composition, lung function, and symptoms of anxiety and depression were also assessed...
February 28, 2017: International Journal of Cardiology
https://www.readbyqxmd.com/read/28376079/pattern-of-brain-injury-and-depressed-heart-rate-variability-in-newborns-with-hypoxic-ischemic-encephalopathy
#16
Marina Metzler, Rathinaswamy Govindan, Tareq Al-Shargabi, Gilbert Vezina, Nickie Andescavage, Yunfei Wang, Adre du Plessis, An N Massaro
BackgroundDecreased heart rate variability (HRV) is a measure of autonomic dysfunction and brain injury in newborns with hypoxic ischemic encephalopathy (HIE). This study aimed to characterize the relationship between HRV and brain injury pattern using magnetic resonance imaging (MRI) in newborns with HIE undergoing therapeutic hypothermia.MethodsHRV metrics were quantified in the time domain (αS, αL, and root mean square at short (RMSS) and long (RMSL) timescales) and frequency domain (relative low-(LF) and high-frequency (HF) power) over 24-27 h of life...
May 3, 2017: Pediatric Research
https://www.readbyqxmd.com/read/28373243/myocardial-damage-detected-by-late-gadolinium-enhancement-cardiac-magnetic-resonance-is-uncommon-in-peripartum-cardiomyopathy
#17
Erik B Schelbert, Uri Elkayam, Leslie T Cooper, Michael M Givertz, Jeffrey D Alexis, Joan Briller, G Michael Felker, Sandra Chaparro, Angela Kealey, Jessica Pisarcik, James D Fett, Dennis M McNamara
BACKGROUND: In peripartum cardiomyopathy, the prevalence of focal myocardial damage detected by late gadolinium enhancement (LGE) cardiovascular magnetic resonance is important to elucidate mechanisms of myocardial injury and cardiac dysfunction. LGE equates irreversible myocardial injury, but LGE prevalence in peripartum cardiomyopathy is uncertain. METHODS AND RESULTS: Among 100 women enrolled within the Investigations of Pregnancy Associated Cardiomyopathy cohort, we recruited 40 women at 13 centers to undergo LGE cardiovascular magnetic resonance, enrolled within the first 13 weeks postpartum...
April 3, 2017: Journal of the American Heart Association
https://www.readbyqxmd.com/read/28351399/effects-of-hyperthermic-baths-on-depression-sleep-and-heart-rate-variability-in-patients-with-depressive-disorder-a-randomized-clinical-pilot-trial
#18
RANDOMIZED CONTROLLED TRIAL
Johannes Naumann, Julian Grebe, Sonja Kaifel, Tomas Weinert, Catharina Sadaghiani, Roman Huber
BACKGROUND: Despite advances in the treatment of depression, one-third of depressed patients fail to respond to conventional antidepressant medication. There is a need for more effective treatments with fewer side effects. The primary aim of this study was to determine whether hyperthermic baths reduce depressive symptoms in adults with depressive disorder. METHODS: Randomized, two-arm placebo-controlled, 8-week pilot trial. Medically stable outpatients with confirmed depressive disorder (ICD-10: F32/F33) who were moderately depressed as determined by the 17-item Hamilton Scale for Depression (HAM-D) score ≥18 were randomly assigned to 2 hyperthermic baths (40 °C) per week for 4 weeks or a sham intervention with green light and follow-up after 4 weeks...
March 28, 2017: BMC Complementary and Alternative Medicine
https://www.readbyqxmd.com/read/28340040/impaired-ability-to-grow-colonies-of-endothelial-stem-cells-could-be-the-mechanism-explaining-the-high-cardiovascular-morbidity-mortality-of-patients-with-depression
#19
Blum Arnon, Pastukh Nina, Zaroura Imad, Jonathan Rotem, Farhat Kamal
Background: Subjects with depression are more prone to develop cardiovascular complications. Severity of depression is associated with higher rates of cardiovascular mortality and morbidity. Several mechanisms were suggested including accelerated atherosclerosis, alteration of the cardiac autonomic response with a decrease in heart rate variability. There is evidence that circulating endothelial progenitor cells (EPCs) are decreased in patients with major depression. Our hypothesis was that patients with depression would have an impaired ability to build colonies of endothelial progenitor cells...
March 9, 2017: QJM: Monthly Journal of the Association of Physicians
https://www.readbyqxmd.com/read/28334441/flexible-parasympathetic-responses-to-sadness-facilitate-spontaneous-affect-regulation
#20
Jonathan P Stange, Jessica L Hamilton, David M Fresco, Lauren B Alloy
The ability of the parasympathetic nervous system to flexibly adapt to changes in environmental context is thought to serve as a physiological indicator of self-regulatory capacity, and deficits in parasympathetic flexibility appear to characterize affective disorders such as depression. However, whether parasympathetic flexibility (vagal withdrawal to emotional or environmental challenges such as sadness, and vagal augmentation during recovery from sadness) could facilitate the effectiveness of adaptive affect regulation strategies is not known...
March 23, 2017: Psychophysiology
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